Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757866AbaJ2X0g (ORCPT ); Wed, 29 Oct 2014 19:26:36 -0400 Received: from cantor2.suse.de ([195.135.220.15]:55218 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757095AbaJ2X0f (ORCPT ); Wed, 29 Oct 2014 19:26:35 -0400 Date: Thu, 30 Oct 2014 00:26:33 +0100 (CET) From: Jiri Kosina X-X-Sender: jikos@twin.jikos.cz To: Greg Kroah-Hartman cc: linux-api@vger.kernel.org, linux-kernel@vger.kernel.org, john.stultz@linaro.org, arnd@arndb.de, tj@kernel.org, Marcel Holtmann , desrt@desrt.ca, hadess@hadess.net, dh.herrmann@gmail.com, tixxdz@opendz.org, simon.mcvittie@collabora.co.uk, daniel@zonque.org, alban.crequy@collabora.co.uk, javier.martinez@collabora.co.uk, teg@jklm.no Subject: Re: [PATCH 00/12] Add kdbus implementation In-Reply-To: Message-ID: References: <1414620056-6675-1-git-send-email-gregkh@linuxfoundation.org> <20141029231106.GB16548@kroah.com> User-Agent: Alpine 2.00 (LRH 1167 2008-08-23) MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Thu, 30 Oct 2014, Jiri Kosina wrote: > > > It seems to me that most of the highlight features from the cover letter > > > can be "easily" (for certain definition of that word, of course) > > > implemented in userspace (vmsplice(), sending fd through unix socket, user > > > namespaces, UUID management, etc). > > > > We have dbus in userspace today, but that requires extra copies of data, > > But we can do zero-copy between processess for quite some time already, so > what exactly is the issue here? > > > and isn't easy, or even possible, to do some of the application-specific > > bus logic that kdbus provides. > > I unfortunately have absolutely no idea what should I imagine here. Also, I think I have heard that binder is going out of staging now, right? I admittedly have very limited understanding of both binder and kdbus, but I guess that is the case for many folks. My understanding is that they are providing very similar functionality, so explanation why we need *both* in the kernel would be very interesting as well. -- Jiri Kosina SUSE Labs -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/